ihmcrobotics/ihmc-alexander-sdk
Jun 2025 – Jan 2026
3 Months active
Languages Used
IDLJavaShellXML
Technical Skills
Bug FixControl SystemsEmbedded SystemsKinematicsMotor ControlNumerical Processing
Biomech OCU
PROFILE
Biomech Ocu
Worked on the ihmc-alexander-sdk repository to enhance robotic control systems by delivering five new features and resolving five bugs over three months. Focused on improving joint aliasing, direction, and calibration for hip, knee, and ankle motors, leveraging URDF-driven configuration and XML for safe, repeatable motion. Expanded the command interface and messaging for richer control, tuned torque parameters for smoother operation, and implemented force/torque offsets to refine ground interaction. Addressed repository governance by migrating submodule URLs and fixed actuator calibration issues to restore performance. Utilized Java, Shell scripting, and embedded systems expertise to increase reliability and integration with higher-level controllers.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
23Total
Bugs
5
Commits
23
Features
5
Lines of code
1,292
Activity Months3
Your Network
28 peopleSame Organization
@ihmc.org12
Work History
January 2026
1 Commits
Jan 1, 2026January 2026 monthly summary focusing on key accomplishments in ihmc-alexander-sdk. Delivered a critical bug fix to restore calibration and performance for V2 lower body actuators, improving reliability of motion control and reducing calibration drift.
1 Commits
Jan 1, 2026January 2026 monthly summary focusing on key accomplishments in ihmc-alexander-sdk. Delivered a critical bug fix to restore calibration and performance for V2 lower body actuators, improving reliability of motion control and reducing calibration drift.
January 2026
October 2025
2 Commits • 1 Features
Oct 1, 2025Monthly performance summary for 2025-10 focusing on delivery value, governance, and technical execution for ihmc-alexander-sdk within ihmcrobotics. This period delivered a critical repository improvement and a precise robotics parameter fix, with clear benefits to onboarding, development velocity, and robot pose stability.
October 2025
2 Commits • 1 Features
Oct 1, 2025Monthly performance summary for 2025-10 focusing on delivery value, governance, and technical execution for ihmc-alexander-sdk within ihmcrobotics. This period delivered a critical repository improvement and a precise robotics parameter fix, with clear benefits to onboarding, development velocity, and robot pose stability.
June 2025
20 Commits • 4 Features
Jun 1, 2025In June 2025, delivered foundational improvements and stability enhancements for the ihmc-alexander-sdk. Key accomplishments include correcting joint aliasing and direction across hip, knee, and ankle motors; establishing URDF-derived joint limits and offset calibration to ensure safe, repeatable motion; expanding the command interface and messaging for richer, safer control; tuning torque control with added break frequencies for smoother operation; and implementing feet force/torque offsets to refine ground interaction and balance. These changes reduce risk in motion planning, improve hardware reliability during operation, and enable more predictable behavior in production deployments. Technologies/skills demonstrated include robotics control, URDF-driven configuration, motor control tuning, SDK interface design, axis/alias management, and data-driven calibration practices. Business value: increased reliability, safer operation, easier integration with higher-level controllers, and improved balance and ground contact for complex tasks.
20 Commits • 4 Features
Jun 1, 2025In June 2025, delivered foundational improvements and stability enhancements for the ihmc-alexander-sdk. Key accomplishments include correcting joint aliasing and direction across hip, knee, and ankle motors; establishing URDF-derived joint limits and offset calibration to ensure safe, repeatable motion; expanding the command interface and messaging for richer, safer control; tuning torque control with added break frequencies for smoother operation; and implementing feet force/torque offsets to refine ground interaction and balance. These changes reduce risk in motion planning, improve hardware reliability during operation, and enable more predictable behavior in production deployments. Technologies/skills demonstrated include robotics control, URDF-driven configuration, motor control tuning, SDK interface design, axis/alias management, and data-driven calibration practices. Business value: increased reliability, safer operation, easier integration with higher-level controllers, and improved balance and ground contact for complex tasks.
June 2025
Activity
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Quality Metrics
Correctness74.8%
Maintainability76.6%
Architecture71.4%
Performance68.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
IDLJavaShellXML
Technical Skills
Bug FixControl SystemsEmbedded SystemsKinematicsMotor ControlNumerical ProcessingROSROS2Robot Operating System (ROS)RoboticsSDK DevelopmentShell ScriptingSoftware DevelopmentURDFXML
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